NE NE Switching 3

Question 1

What is Link Aggregation (EtherChannel) used for in switched networks?

Accepted Answer

To bundle multiple physical links into one logical link for increased bandwidth and redundancy

Answer

To extend VLANs across geographically separate sites

Answer

To load balance traffic between routers

Answer

To provide QoS for voice traffic

Question 2

What protocol is used to negotiate EtherChannel formation in a standards-based (non-proprietary) environment?

Accepted Answer

LACP (802.3ad)

Answer

PAgP

Answer

CDP

Answer

LLDP

Question 3

What is a Layer 3 switch capable of that a traditional Layer 2 switch cannot do?

Accepted Answer

Routing packets between VLANs using IP addresses without an external router

Answer

Forwarding frames based on MAC addresses

Answer

Supporting 802.1Q trunking

Answer

Assigning ports to VLANs

Question 4

What is a Switched Virtual Interface (SVI) on a Layer 3 switch?

Accepted Answer

A virtual interface associated with a VLAN used for inter-VLAN routing and management

Answer

A physical port assigned to a single VLAN

Answer

A trunk port connecting two switches

Answer

A loopback interface for management

Question 5

Which feature prevents traffic from being forwarded from one access port to another on the same VLAN, enhancing security?

Accepted Answer

Private VLAN (PVLAN) / Protected Ports

Answer

VLAN ACL

Answer

Storm Control

Answer

Spanning Tree

Question 6

What does storm control do on a switch port?

Accepted Answer

Monitors and rate-limits broadcast, multicast, or unknown unicast traffic to prevent flooding

Answer

Limits the number of MAC addresses learned per port

Answer

Blocks all inbound traffic during high-load periods

Answer

Prioritizes voice traffic over data traffic